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| Hauptseite > Publikationsdatenbank > Directed Immobilization of Janus-AuNP in Heterometallic Nanogaps: a Key Step Toward Integration of Functional Molecular Units in Nanoelectronics |
| Hauptseite > Publikationsdatenbank > Directed Immobilization of Janus-AuNP in Heterometallic Nanogaps: a Key Step Toward Integration of Functional Molecular Units in Nanoelectronics |
| Journal Article | FZJ-2014-06243 |
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2014
Soc.
Washington, DC
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Please use a persistent id in citations: doi:10.1021/jp5085179
Abstract: Forming reliable and reproducible molecule−nanoelectrodecontacts is one of the key issues for the implementation of nanoparticles asfunctional units into nanoscale devices. Utilizing heterometallic electrodes andJanus-type nanoparticles equipped with molecules allowing selective bindingto a distinct electrode material represents a promising approach to achievethis goal. Here, the directed immobilization of individual Janus-type goldnanoparticles (AuNP) between heterometallic electrodes leading to theformation of asymmetric contacts in a highly controllable way is presented.The Janus-AuNP are stabilized by two types of ligands with different terminalgroups on opposite hemispheres. The heterometallic nanoelectrode gaps areformed by electron beam lithography in combination with a self-alignmentprocedure and are adjusted to the size of the Janus-AuNP. Thus, by choosingadequate molecular end group/metal combinations, the immobilizationdirection of the Janus-AuNP is highly controllable. These results demonstratethe striking potential of this approach for the building-up of novel nanoscale organic/inorganic hybrid architectures.
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